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/** Initialize VHPT and region registers. */
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/** Initialize VHPT and region registers. */
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void set_environment(void)
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void set_environment(void)
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{
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{
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//#ifdef NEVERDEFINED  
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    region_register rr;
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    region_register rr;
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    pta_register pta;  
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    pta_register pta;  
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    int i;
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    int i;
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    /*
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    /*
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     * First set up kernel region register.
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     * First set up kernel region register.
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     * This action is redundand (see start.S) but I would to keep it to make sure that
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     *no unexpected changes will be made.
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     */
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     */
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    rr.word = rr_read(VRN_KERNEL);
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    rr.word = rr_read(VRN_KERNEL);
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    rr.map.ve = 0;                  /* disable VHPT walker */
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    rr.map.ve = 0;                  /* disable VHPT walker */
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    rr.map.ps = PAGE_WIDTH;
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    rr.map.ps = PAGE_WIDTH;
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    rr.map.rid = ASID_KERNEL;
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    rr.map.rid = ASID2RID(ASID_KERNEL,VRN_KERNEL);  
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    rr_write(VRN_KERNEL, rr.word);
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    rr_write(VRN_KERNEL, rr.word);
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    srlz_i();
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    srlz_i();
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    srlz_d();
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    srlz_d();
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    /*
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    /*
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        if (i == VRN_KERNEL)
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        if (i == VRN_KERNEL)
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            continue;
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            continue;
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        rr.word == rr_read(i);
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        rr.word == rr_read(i);
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        rr.map.ve = 0;      /* disable VHPT walker */
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        rr.map.ve = 0;      /* disable VHPT walker */
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        rr.map.rid = ASID_INVALID;
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        rr.map.rid = ASID2RID(ASID_INVALID,i);
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        rr_write(i, rr.word);
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        rr_write(i, rr.word);
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        srlz_i();
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        srlz_i();
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        srlz_d();
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        srlz_d();
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    }
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    }
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    pta.map.base = VHPT_BASE >> PTA_BASE_SHIFT;
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    pta.map.base = VHPT_BASE >> PTA_BASE_SHIFT;
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    pta_write(pta.word);
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    pta_write(pta.word);
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    srlz_i();
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    srlz_i();
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    srlz_d();
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    srlz_d();
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//#endif
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    return ;   
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    return ;   
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}
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}
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